Showing 1,541 - 1,560 results of 4,621 for search 'diffusion (processes OR process)', query time: 0.16s Refine Results
  1. 1541
  2. 1542

    Security-Enhanced Image Encryption: Combination of S-Boxes and Hyperchaotic Integrated Systems by Renjie Song, Haixia Zhao

    Published 2025-01-01
    “…Further, a hyperchaotic integrated system is constructed by combining the Lorenz system and the Henon system with the hyperchaotic Chen system as the core. A three-step diffusion mechanism is adopted in the encryption process, and the S-boxes obtained from the search of the particle swarm optimization algorithm are fully integrated with the chaotic sequences generated by the hyperchaotic integrated system in the first two steps of diffusion to improve the security and randomness of the encryption algorithm. …”
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  3. 1543

    Unveiling Cytotoxic Bioactive Compounds from <i>Erica carnea</i> L.: Extraction Optimization, Kinetic Modeling, and Biological Activity Assessment by Violeta Jevtovic, Khulood Fahad Saud Alabbosh, Reem Ali Alyami, Maha Raghyan Alshammari, Badriah Alshammari, Pavle Mašković, Jelena Mašković, Jelena Nikolić, Milan Mitić

    Published 2025-05-01
    “…The thermodynamic parameters under transition theory at 50 °C were ∆S* = (−220.22)–(−285.15) J/Kmol, ∆H* = (2.24–23.88) kJ/mol, and ∆G* = (94.34–96.30) kJ/mol, indicating that the extraction of BCs with cytotoxic activity against the three cell lines is an irreversible and endothermic process. In addition to cytotoxic activity, the extracts demonstrated strong antioxidant activity (e.g., DPPH IC<sub>50</sub> = 16.55 µg/mL) and antibacterial activity against multiple bacterial strains. …”
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  4. 1544

    Fourier Analysis of CMFD Method in Cylindrical Geometry by WEN Yuchen, HAO Chen, WANG Yizhen

    Published 2025-06-01
    “…Theoretical derivations reveal that the radially increasing mesh size in cylindrical geometries introduces spatially varying optical thicknesses, which destabilize the conventional CMFD iteration process. To address this instability, an optical diffusion CMFD method (odCMFD) strategy was implemented to optimize the original CMFD formulation based on cylindrical geometry. …”
    Article
  5. 1545

    Improvement of Surface Roughness and Cracking Study of Nb<sub>3</sub>Sn SRF Films by Ziyu Wang, Gai Wang, Shengwen Quan, Lin Lin, Manqian Ren, Jiankui Hao, Fang Wang, Feng Zhu, Fei Jiao, Senlin Huang

    Published 2025-02-01
    “…Nb<sub>3</sub>Sn films on flat and curved substrates with the same coating process on Nb<sub>3</sub>Sn cavities at Peking University (PKU) were tested under different tensile and compressive stress levels. …”
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  6. 1546

    Computational Analysis of an Ammonia Combustion System for Future Two-Stroke Low-Speed Marine Engines by Jose R. Serrano, Ricardo Novella, Héctor Climent, Francisco José Arnau, Alejandro Calvo, Lauge Thorsen

    Published 2024-12-01
    “…The engine features two diesel injection valves, employed to initiate the combustion process, and two ammonia injection valves. Simulation scenarios include variations in the injection timing of the pilot diesel injector and the relative orientation of diesel and ammonia sprays. …”
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  7. 1547

    Neural structural alterations correlates of quadriceps muscle strength deficits in patients after anterior cruciate ligament reconstruction by Le Yu, Shanshan Zheng, Yushi Chen, Xiao'ao Xue, Zikun Wang, JiaYan Cheng, Yang Sun, He Wang, Yinghui Hua

    Published 2025-01-01
    “…We chose CST as a region of interest and performed diffusion tensor imaging (DTI) that measured the microstructure of white matter tracts. …”
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  8. 1548
  9. 1549

    Additive operator splitting scheme for a general mean curvature flow and application in edges enhancement by Rafaa Chouder, Noureddine Benhamidouche

    Published 2024-12-01
    “… Many models that use non-linear partial differential equations (PDEs) have been extensively applied for different tasks in image processing. Among these PDE-based approaches, the mean curvature flow filtering has impressive results, for which feature directions in the image are important. …”
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  10. 1550
  11. 1551

    The Influence of the Structural Architecture on the Swelling Kinetics and the Network Behavior of Sodium-Alginate-Based Hydrogels Cross-Linked with Ionizing Radiation by Ion Călina, Maria Demeter, Gabriela Crăciun, Anca Scărișoreanu, Elena Mănăilă

    Published 2024-09-01
    “…The present work discusses the influence of the structural architecture of sodium alginate–co-acrylic acid–poly(ethylene) oxide hydrogels, crosslinked through electron beam (e-beam) radiation processing. The most important properties of the hydrogels were studied in detail to identify a correlation between the architecture of the hydrogels and their properties. …”
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  12. 1552

    White matter microstructure abnormalities in thalassemia patients using TBSS analysis based on DTI by Mingrui Yang, Guowei Chen, Chaotian Luo, Cheng Tang, Fei Peng, Rong Kong, Peng Peng

    Published 2025-05-01
    “…All participants underwent 3.0 T MRI scans. DTI data were processed using the FSL software package, focusing on the assessment of four indices: fractional anisotropy (FA), mean diffusivity (MD), radial diffusivity (RD), and axial diffusivity (AD). …”
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  13. 1553

    Reading and White Matter Development: A Systematic Review of Neuroplastic Changes in Literacy by Yunus Pınar, Nihat Bayat, Begümhan Yüksel, Yasin Özkara

    Published 2025-05-01
    “…<b>Results:</b> Children with stronger reading abilities consistently showed increased fractional anisotropy (FA) in key white matter pathways, such as the arcuate fasciculus and superior longitudinal fasciculus, supporting phonological processing and reading fluency. Longitudinal data suggest that early exposure to literacy enhances brain flexibility and white matter organization. …”
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  14. 1554

    Predicting IDH and 1p/19q molecular status of gliomas with multi-b values DWI by Shanshan Zhao, Peipei Wang, Eryuan Gao, Mengzhu Wang, Guang Yang, Shouhui Niu, Mengjiao Pan, Kai Zhao, Jingliang Cheng, Xiaoyue Ma

    Published 2025-07-01
    “…The multi-b-value DWI was acquired using a spin-echo echo-planar imaging sequence with 13 b-values (0, 10, 20, 30, 50, 70, 100, 150, 200, 400, 800, 1500, 2000 s/mm²) in 30 diffusion-encoding directions. Multi-b-value DWI images were post-processed to generate parametric maps based on the mono-exponential (Mono), the intravoxel incoherent motion (IVIM), the stretched exponential model (SEM) and the continuous-time random walk (CTRW) models. …”
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  15. 1555

    Improvement of physical and mechanical characteristics of gearbox shafts using the oxycarbonitriding method by Yu. Ye. Meshkov, M.S. Dmitriev

    Published 2025-03-01
    “…Priority areas of scientific research in the field of mechanical engineering have been identified for the development of new methods and technologies for increasing the wear resistance of steel surfaces by applying modified diffusion coatings. It has been shown that the key problem in optimizing the processes of saturation of metals and alloys with one element is cementation, nitriding, alitization, chromium plating, etc. …”
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  16. 1556

    Features of the Behavior of a Plane Axisymmetric Mag-netic Fluid Drop in a Nonmagnetic Solvent and a Uni-form Magnetic Field by V. G. Bashtovoi, A. G. Reks, A. A. Zahadskaya

    Published 2022-12-01
    “…It is shown that at the initial stage of the process, the rates of mechanical movement of the boundaries of the magnetic fluid volume are much higher than the rates of movement of the diffusion front. …”
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  17. 1557

    Comparative Evaluation of Mathematical Model and In Vivo Study of Calcium Phosphate Bone Grafts by Mikhail A. Shlykov, Polina V. Smirnova, Anatoliy S. Senotov, Anastasia Yu. Teterina, Vladislav V. Minaychev, Igor V. Smirnov, Roman A. Novikov, Ekaterina I. Marchenko, Pavel S. Salynkin, Vladimir S. Komlev, Roman S. Fadeev, Irina S. Fadeeva

    Published 2024-12-01
    “…Taking into account the fact that the equilibrium in regeneration conditions is reached only after the reparative histogenesis process is completed, the implant surface is constantly modified. …”
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  18. 1558
  19. 1559

    Multiple mush generations provide insight into the longevity of open-conduit basaltic volcanoes by Beatrice Schiavon, Chiara M. Petrone, Francesca Forni, Alessio Pontesilli, Haiyang Hu, Piergiorgio Scarlato, Daniele Andronico, Elisabetta Del Bello, Manuela Nazzari, Silvio Mollo

    Published 2025-07-01
    “…Abstract Investigating the dynamics and timescales of magmatic processes in open-conduit basaltic volcanoes is crucial for improving our understanding of explosive eruptions and better assessing volcanic hazards. …”
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  20. 1560

    Progress of Research and Application of Printed Circuit Heat Exchanger for Offshore LNG Platform by Wang Kangshuo, Ren Tao, Ding Guoliang, Ma Nan

    Published 2016-01-01
    “…In this paper, the progress of research and application of printed circuit heat exchanger in recent years, including the basic principle, manufacturing process based on diffusion welding, heat transfer and pressure drop characteristics, and mechanical behaviors, is reviewed; the application status of printed circuit heat exchanger in offshore LNG platform is summarized; and the key technologies that requires to be overcome in future applications in offshore LNG platform is proposed, including thermal design, manufacturing process, detection technology.…”
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